PLATE V. 



Fig. 



1. 1 «. Amphiroa ahda, without gonophores. 

 1 b. The same, with two gynophores. 



1 c. A detached gynophore. 



2. Amphiroa angulata. 



3 15 give the details of the organization and development of the Cahjcoplioridm ; fig. 15 



being copied from Gegenbaur. 



3. Part of the proximal nectocalyx of Biphyes dispar, showing the manner in which the 



coenosarc ends proximally, and the course of the nectocalycine duct. 



4. The proximal end of the coenosarc of Diphi/es appendiciilata. 



5. The proximal or basal end of a polypite of Biphycs, exhibiting the pyloric valve and 



the relations of the phyllocyst to the hydrophyllium. 



6. The same parts (without the hydrophyllium) in Diphi/es appendiculata. 



7. A portion of the proximal end of the coenosarc of Liphyes, bearing young polypites, 



with their rudimentary hydrophyllia, &c. 



8. The basal or proximal portion of a polypite of SphcBronecies. 



9. The polypite of Eiidoxia Lesso7ii, with part of its hydrophyllium. 

 10, 11. Polypites q{ Biphycn, more advanced than in fig. 7. 



12 a—/. The successive stages of growth and metamorphosis of the tentacular sac in Biphyps. 



13. A gynophore of Eiidoxia Lessoni. 



13 «. Part of the wall of the manubrium of such a gynophore, with an ovum in place. 



1 4. A free androphore of Sphenoides. 



14 «. Its manubrium burst, and discharging its contents. 

 14 ^, 14 c. Spermatozoa. 



\^a—y. The successive stages of the development of Diphyes, after Gegenbaur. (See p. 23.) 



20 



